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Original thread:
Post 7 made on Thursday January 2, 2003 at 14:30
Dave Houston
RF Expert
Joined:
Posts:
October 2001
1,521
On 01/02/03 13:42.48, westmetro said...
When Intel released the XScale, they also changed
the low-level method of talking to memory address
lines and the system memory. On top of that,
Compaq changed the memory map of the iPaq too.
PocketPC 2002 deals with this via a HAL-style
hardware layer but any software that talks directly
to the hardware (like PDAWin) needs to be far
more intelligent than they have been up to now.

The problem predates the XScale processors. There doesn't appear to be any standard that is adhered to as to which CPU extended ports map to which physical pins in the CF slot. Even each StrongArm model iPAQ did it differently. PDAwin understands this while you obviously do not. They detect the difference between H36xx, H37xx, and H38xx iPAQs and set things up as is appropos but have not found documentation for the other PDAs and do not know how to detect other PDAs.

I know for a fact that they've explored this because we sent them an e-740 before they became available in Slovakia.

The *real* problem is that the people at PDAWin
seem to be unable to grasp this concept. There
are probably less than 10 lines of assy code that
need to be modified. What needs to happen is
first of all run a simple test (two lines of code)
to detect StrongArm or XScale processor, then
set the memory map address for the expansion slot
(3 lines of code) as appropo. Compaq has gone
so far as to release sample code that accomplishes
this along with a document that talks about specific
code adjustments that have to be made for expansion
pack and CF card communications to work corectly
on the H39xx and H54xx series. But as I said
PDAWin appears to be unable to deal with this.

How about a URL to this document?

How about one for the Audiovox Maestro, the Toshiba e-740, the Dell Axim?

I don't think you understand the issue.


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